Collecting Pollen

Author:
CEMC
Beever Bee flies to a field of flowers to collect pollen. On each flight, he visits only one flower and can collect up to 10 mg of pollen. He may return to the same flower more than once. The initial amount of pollen in each flower (in mg) is shown below. What is the maximum total amount of pollen that Beever can collect in 20 flights? (Click on a flower to collect pollen)